3 tbsp garlic olive oil (or EVOO with 1 clove crushed garlic)
1 good handful of sage leaves
2 tsp grated lemon rind
cracked black pepper
4 thin marlin or swordfish steaks
Marinade:

3 tbsp olive oil, a squeeze of lemon or lime juice, a little chilli (optional).

Marinade steaks for 1 -2 hours before cooking to keep the fish moist.

Heat olive oil in a large frying pan over a medium-high heat.
Add sage, (garlic if not in oil), lemon rind and pepper and cook for 2 minutes or until the sage is crisp.

Add fish to the pan and cook for 1 minute on each side or until almost cooked through.

Serve the fish with the sage oil.

(ps. this recipe works well with any firm white fish)